Pos Malaysia released a stamp to commemorate 40 years of Sultan Pahang on 29 December 2014 (date of sale). However, this stamp was launched on 23 December 2014, and the special postmark cancellation dated on 23 December 2014.

This new design postage due stamp has been in circulation for more than one year. However, Pos Malaysia has never officially released this postage due stamp, leaving many collectors in dark for
many months.